Sanding and polishing attachment for lathes



June 14, 1938. w. F. YUNG,

sANDINq AND, POLISHING ATTACHMENT FOR LATHES Filed July 27, 1956 2Sheets-Sheet 1- Eyang I-US ATTORNEYS June 14, 1938.

w. F. YUNG SANDING AND POLISHING ATTACHMENT FOR LATHES Filed July 27.1936 2 Sheets-Sheet 2' HIS ATTORNEYS Patented June 14, 1938 UNITEDSTATES PATENT OFFICE SANDING AND POLISHING ATTACHMENT FOR LATHES Y 1Claim.

This invention relates to sanding or polishing attachments for lathesand similar devices and has for the primary object the provision of asimple, eifrcient and inexpensive device of this character which may bereadily adapted to a lathe whereby work finished by said lathe may beeasily and quickly polished to remove tool grooves or markings or otherirregularities therefrom.

With these and other objects in view, this invention consists in certainnovel features of construction, combination and arrangement of parts tobe hereinafter more fully described and claimed. 7

For a complete understanding of my invention,

reference is to be had to the following description and accompanyingdrawings, in which Figure 1 is a side elevation illustrating a sandingor polishing device constructed in accordance with my invention.

Figure 2 is a top plan view illustrating the same.

Figure 3 is an end elevation illustrating the device.

Figure 4 is a longitudinal sectional view illustrating the means ofmounting thesupporting arm for the sanding or polishing medium.

Figure 5 is a detail sectional view illustrating the means for adjustingthe arm to take up slack in the sanding or polishing medium.

Figure 6 is a detail sectional view illustrating the connection betweenthearm and its supporting bracket whereby the arm may be adjusted on thebracket.

Referring in detail to the drawings, the nu- 5 meral I indicates a basehaving secured thereto a fitting 2 adapted for connecting the base I toa. tool post holder of a lathe or similar device. The

base carries an electric motor 3 adjacent one end thereof and theopposite end of the base carries a journal 4 rotatably supporting ashaft 5. Secured to the shaft 5 is a pulley 6. Said pulley is connectedto a pulley l secured to the electric motor by an endless belt 8. Alsosecured to the 5 shaft 5 is a drum 9 over which is trained an endlesssanding or polishing medium or belt ID, the latter also being trainedover a drum H journaled to the forked end. 12 of an arm IS. The arm hasan enlargement l4 provided with spaced slots I6 10 through which extendstud bolts H. The bolts I! are threaded to a bracket l8 and the latteris journaled on the shaft 5 so that said arm may be raised and loweredwith respect to the base to engage and disengage the sanding orpolishing 15 medium with the work on the lathe for the purpose ofremoving tool grooves or markings or any other irregularities that maybe on the work.

A device of the character. described may be easily adapted to a latheand may be employed 20 for polishing or sanding various kinds of workfinished by the lathe and being secured to the tool post holder of thelathe, said device may be moved towards and from the work by the usualadjusting of the tool post of the lathe.

Having described the invention, I claim:

'An attachment for lathes comprising a base, a fitting secured to thebase for securing the latter on a tool post holder of a lathe, a shaftjournaled on said base, power means carried by the 30 base, meansconnecting said power means to the shaft, a. bracket journaled on saidshaft, an arm adjustably secured to said bracket, spaced drums and oneof said drums journaled on one end of said arm and the other drumsecured on the shaft, and an endless polishing and sanding mediumtrained over the drums.

WILLIAM F. YUNG.

